ad7475br-reel7 Analog Devices, Inc., ad7475br-reel7 Datasheet - Page 12

• Manufacturer Part Number: ad7475br-reel7
• Description: 1 Msps, 12-bit Adcs
• Manufacturer: Analog Devices, Inc.

AD7475/AD7495
TYPICAL PERFORMANCE CURVES
Figure 7 shows a typical FFT plot for the AD7475 at a 1 MHz
sample rate and a 100 kHz input frequency.
Figure 8 shows a typical FFT plot for the AD7495 at a 1 MHz
sample rate and a 100 kHz input frequency.
–115
–115
–15
–35
–55
–75
–95
–15
–35
–55
–75
–95
0
0
50
50
Figure 7. AD7475 Dynamic Performance
Figure 8. AD7495 Dynamic Performance
100
100
150
150
FREQUENCY (kHz)
FREQUENCY (kHz)
200 250
200 250
300
300
8192 POINT FFT
f
f
SINAD = 70.46dB
THD = –87.7dB
SFDR = –89.5dB
8192 POINT FFT
f
f
SINAD = 69.95dB
THD = –89.2dB
SFDR = –91.2dB
SAMPLE
IN
SAMPLE
IN
350
350
= 100kHz
= 100kHz
400
400
= 1MSPS
= 1MSPS
450
450
500
500
Rev. B | Page 12 of 24
Figure 9 shows the SINAD performance vs. input frequency for
various supply voltages while sampling at 1 MSPS with an SCLK
of 20 MHz.
71.0
70.5
70.0
69.5
69.0
68.5
Figure 9. AD7495 SINAD vs. Input Frequency at 1 MSPS
10
V
DD
= V
INPUT FREQUENCY (kHz)
DRIVE
= 3.60V
100
V
DD
= V
V
V
DD
DD
DRIVE
= V
= V
DRIVE
DRIVE
= 5.25V
= 4.75V
= 2.70V
1000